| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -S -mergeicmps < %s | FileCheck %s |
| |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| %"struct.a::c" = type { i32, i32*, i8* } |
| |
| ; The entry block cannot be merged as the comparison is not continuous. |
| ; While it compares the highest address, it should not be moved after the |
| ; other comparisons, as that would make the allocas non-dominating. |
| |
| define i1 @test() { |
| ; CHECK-LABEL: @test( |
| ; CHECK-NEXT: "land.lhs.true+entry": |
| ; CHECK-NEXT: [[H:%.*]] = alloca %"struct.a::c", align 8 |
| ; CHECK-NEXT: [[I:%.*]] = alloca %"struct.a::c", align 8 |
| ; CHECK-NEXT: call void @init(%"struct.a::c"* [[H]]) |
| ; CHECK-NEXT: call void @init(%"struct.a::c"* [[I]]) |
| ; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds %"struct.a::c", %"struct.a::c"* [[H]], i64 0, i32 1 |
| ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds %"struct.a::c", %"struct.a::c"* [[I]], i64 0, i32 1 |
| ; CHECK-NEXT: [[CSTR:%.*]] = bitcast i32** [[TMP0]] to i8* |
| ; CHECK-NEXT: [[CSTR2:%.*]] = bitcast i32** [[TMP1]] to i8* |
| ; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* [[CSTR]], i8* [[CSTR2]], i64 16) |
| ; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[MEMCMP]], 0 |
| ; CHECK-NEXT: br i1 [[TMP2]], label [[LAND_RHS1:%.*]], label [[LAND_END:%.*]] |
| ; CHECK: land.rhs1: |
| ; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds %"struct.a::c", %"struct.a::c"* [[H]], i64 0, i32 0 |
| ; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds %"struct.a::c", %"struct.a::c"* [[I]], i64 0, i32 0 |
| ; CHECK-NEXT: [[TMP5:%.*]] = load i32, i32* [[TMP3]], align 4 |
| ; CHECK-NEXT: [[TMP6:%.*]] = load i32, i32* [[TMP4]], align 4 |
| ; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i32 [[TMP5]], [[TMP6]] |
| ; CHECK-NEXT: br label [[LAND_END]] |
| ; CHECK: land.end: |
| ; CHECK-NEXT: [[V9:%.*]] = phi i1 [ [[TMP7]], [[LAND_RHS1]] ], [ false, %"land.lhs.true+entry" ] |
| ; CHECK-NEXT: ret i1 [[V9]] |
| ; |
| entry: |
| %h = alloca %"struct.a::c", align 8 |
| %i = alloca %"struct.a::c", align 8 |
| call void @init(%"struct.a::c"* %h) |
| call void @init(%"struct.a::c"* %i) |
| %e = getelementptr inbounds %"struct.a::c", %"struct.a::c"* %h, i64 0, i32 2 |
| %v3 = load i8*, i8** %e, align 8 |
| %e2 = getelementptr inbounds %"struct.a::c", %"struct.a::c"* %i, i64 0, i32 2 |
| %v4 = load i8*, i8** %e2, align 8 |
| %cmp = icmp eq i8* %v3, %v4 |
| br i1 %cmp, label %land.lhs.true, label %land.end |
| |
| land.lhs.true: ; preds = %entry |
| %d = getelementptr inbounds %"struct.a::c", %"struct.a::c"* %h, i64 0, i32 1 |
| %v5 = load i32*, i32** %d, align 8 |
| %d3 = getelementptr inbounds %"struct.a::c", %"struct.a::c"* %i, i64 0, i32 1 |
| %v6 = load i32*, i32** %d3, align 8 |
| %cmp4 = icmp eq i32* %v5, %v6 |
| br i1 %cmp4, label %land.rhs, label %land.end |
| |
| land.rhs: ; preds = %land.lhs.true |
| %j = getelementptr inbounds %"struct.a::c", %"struct.a::c"* %h, i64 0, i32 0 |
| %v7 = load i32, i32* %j, align 8 |
| %j5 = getelementptr inbounds %"struct.a::c", %"struct.a::c"* %i, i64 0, i32 0 |
| %v8 = load i32, i32* %j5, align 8 |
| %cmp6 = icmp eq i32 %v7, %v8 |
| br label %land.end |
| |
| land.end: ; preds = %land.rhs, %land.lhs.true, %entry |
| %v9 = phi i1 [ false, %land.lhs.true ], [ false, %entry ], [ %cmp6, %land.rhs ] |
| ret i1 %v9 |
| } |
| |
| declare void @init(%"struct.a::c"*) |